Lifting apparatus for motor cars or other vehicles



Sept'. 15, 1,931. Ai E. Hna-5G55 L'IFTING APPARATUS FOR MOTOR GARS OR OTHER VEHICLES Filed May 9, 1930.:

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Sept. l5, 1931. l A. E. Hx-:DGES 1,823,449

LIFTING APPARATUS FORMOTOR CARS OR OTHER VEHICLES Fled May 9, 1930 2 Sheets-Sheet 2,

Inwnior.-

l Mm w 4Patented Sept. 15, 1931 ALBERT ERNEST HEDGES, oFfTAUNToN, `internato LIFTING APPARATUS kFOR MOTOR CARS OR OTHER VEHICLES Application filed May 9, 1930, Serial No. 450,962, and in Great Britain February 14, 1930.

This invention relates to jacking apparatus for its object to provide simple and eiiicient means, whereby a vehicle may be readily raised so that one or more of the wheels are free ofthe ground.

According to this invention, a cylinder or cylinders' arefprovided which are pivotally kConnected at one end to the frame or other convenient partof the vehicle. Disposed within each cylinder is apiston or plunger, the end of saidplunger or the piston rod, as the case maybe, projecting beyond the end of the cylinder and `having pivotally connected to it, one end of an arrn or link, the

opposite end of which is pivotally supportedL from the axle of the vehicle or other convenient part. The arm just referred to, carries'at that end to which the aforesaid plunger or piston rod is f connected, a. roller or wheel. Provision is made whereby compressed air, steam, or a liquid underpressure may be admitted to either end of the cylinder to operate the piston or plunger in a manner such that the arm may either be kcaused to assume ay substantially vertical position when the roller contacting with the ground will raise the vehicle or to cause the said arm to assume a position where the roller is clear of the ground.

yThe compressed air for operating the plunger or piston may beobtained from any suitable source, as for example, from a pump operated by the engine and such as already in use for inilating the pneumatic tires of vehicles.

In order that the invention may be the better understood drawings are appended illustrating a form of device according to this invention in which:-

Fig. 1 is a longitudinal section.

Fig. 2 is an end view.

Fig. 3 is a plan.

Fig. 4 is a side view showing the parts in their effective positions. j y

Fig. 5 is a sectional view showing ycertain details.

- Fig. 6 is a cross sectional view, on the line 6-`-6 of Fig. 1.

Fig. `7 is a View showing means for supksite end of which 7 is forked as shown and carries 'a pin 8 upon which is `mounted a roller 9 having its periphery recessed at 9ZL to engage a track 10 carriedby a plate l1 which,

when the parts are in their 'effective position as shown in Fig. 4, engages theV ground, raising the axle 1. The pin 8 at its ends engages tracks or guides 12 of suitable outline to permit the roller 9 to run upon the track 10 which it will be noted at its forward end P terminates in an upwardly projecting portion 13. The guides 12 also serve to maintain the roller 9 in contact with the said track 10. 14 indicates a rod pivotally connected at its end 15 to the inner end of the plate 11, said rod passing through an eye 16 secured to the 75 cylinder' 17, hereafter more fully described, the withdrawal of the rod from the eye being prevented by means of the lock nuts 18 upon the inner end of said rod. v19 indicates a helical spring encircling the rod 14 and abutting at its ends respectively against the inner surface of the eye and the end of the plate 11. The spring 19, aswill be hereafter more fully explained, acts to force the plate 11 outwards. 2O indicates a hollow piston rod having at S5 one end a piston 21, slidable in the aforesaid cylinder 17, said piston preferably being recessed, as shown, to contain bucket leathers indicated .by 17a.

Disposed within the hollow piston rod 20 90 is a rod 22 having upon its inner end a stop, which in ythe example illustrated, is comprised of lock nuts 23, but said stop may be in any other convenient form. The nuts 23 serve to limit the outward movement of the lpiston 21 by contacting with the bottom of the recess 24 in the said piston and in which recess the inner end of the piston rod is secured.

The rod 22 passes through the end of the 'mn v The forward or outer end-of t-hepistonrodis provided with a forkedheadj26the limbs of which are perforated to engage 'the aforesaid pin 87 .said limbs lbeingrespectively.dis-v posed within the limbs ot' the forked head Of'Qd. 1

Dis-posed atfthe..;forward or. outer end lof the cylinder .17 andy disposed at'fa rightiangle ormedaintegrally therewith two `pins .39., v351 disposed in suitable :parallel spaced-.relation ship, dhe pin .30 passingethrough .n -stuiing box: and-gland 30s. upon ithecylnder-cover 3.2

into the A:in terionot ,the cylinder 17 as shown The lseeond ip n 31 `passes through therend of .a snnsldV box or ychest f 33, suitably packed Y at...onerendrait.235.` The fpins .3.0,y 31 form-.valves forfwhieb purpose Ypin'r30 -is bored from .its 2 outerend `for a certain distance 1nwards,`an.d

the-ipinl is bored. for a yoertfnin distance from rits innerendrthesebores onpassagesfbeing indie-.ated respectively by "361and V37,.and

communicating Y.respectively with eaCh borev ina transverse lipasseure 38v 39; As .the .pis-- ton Lmoves outwards atthe ends of gits stroke.. it 'ieontaets with-the inner end of @the @111.30 moving it., .together with the pindroutwards.. T he return fmoveinento the plins 3.30, 3.1 is.

effected byineans ofen adjnstabletappet 40. Carried by a .plate Afl mounted uponzthe pistonen-ed 20 The compressed fluid-for .Causing theioutwend Vlnevendent of thefpiston is ladmitted yinto the Cylinder 'through animi-.re-`

tnln yvalve 42 disposed fn-a easing l-3., V,said .f

easing-having aleonneetionfie for .the attachmentof the rpe-supplyingthe operating;

fluid. Q Connected to the casing just referred te, 'onfthe Cylinder side ofthe veli/e, .isone end of a pipe 15, the oppositeend of which is yconnectedto the aforesaid @chest 3 3, `the arrangement lbeingsuch that when the pin 31 is moved into its outermost position ybythe piston acting on the pin 30,l as tjhe :said piston reaches the outerend of its stroke, `the transverse pont A3.9. will .he moved .out of .the

chest placing the .cylinder fbehfind :the {pist-on' opentothe atmosphere. Y

yThe vforward movement fothe pin 3,0 durn ngfth-is period .eanses. its transvense' :port 38 to be `moved into .a position wheneit is eelosed by the peeking of Lthe stnding fbox .30s, thus closing the forward end of .thefcylindery ftov the atmosphere to permit the operating fluid to be electively-passed thereto through Va non-return valve disposed within a casing 46, having a connection 16s for the pipe supplying the operating fluid and supported upon the inner end of the cylinder 17 and connected through a pipe 47 and elbow v48 to' the said forward end.

Asithezpiston moves into its Ainnermost position,-1the .adjustable tappet i0 eiects'the return movement of the pins 80, 31 thus causing the inner end of the cylinder to be again closed to atmosphere, as shown in Figure and the transverse port 38 of pin SOto' bemoved into aY position where it is in communication .with `-the forward end of the cylinder to open same to the atmosphere as shown --in F ig. v1.

Upon ythe forward ,fmovement fot the piston. thep'late- ,1l Lwill'be .pushed forward by the spring 19, theroller remaining atthe inner 1 endorn plate )1:1 until such time'asv the said plate contacts with the ground when lthe said 'roller will vmove along ithe track l() until it reaches the outer end andits Ifurther movement is checked bythe lock ynuts 23 upon the rod22, whichas previously stated, serve to limit Ethe outward movement of :the said piston, .the .length of forward strokeof whiehlis sufficient to .cause the rod .6 to be moved beyond ithe vvertical position in order thatthe reaction due -to the weight ofthe raised vehicle lshall be mainly exerted in the form of a thrust alongthfisL last mentioned rod.

The return movement of the piston causes the roller to travel :backwards over itrack 10 l until it reaches theiinner Vend :of the guides l2 ,when it acts lto raisevthe plat-e 11 returning it to the position vshown in Figure '1.

The'supply 'of the operating fluid. is ,-controlled by means ,of la .two-way cock.

-Rrovision may be -made 'for holding the parts in 4their raised position and such means may comprise a .depending plate L19 hav ing :its lower end bent `back-wards and upwards, as shown at 50 Figure 17^, sia-id up- `wardly turned part 50 lengaging the'projectingend of the pin 8 .of roller 9L/.the pressure upon the Iparts when operated pushes the pin 8 clearlof vthe part 50.-

According to the modiiiedvarrangement vshown dlagrammatically m Figure 8, linstead of the piston rod being provided with the` above described roller 9, and .its as.- sociated parts, vthe said piston lrod may at its outer end be connected .to what is in effect a -f pair oftoggle levers indicated Aby 51e-nd 55,2, the upper extremity of .the lever 51 being pivoted to any suitable part ,of the underneath .of the vehicle andthe lower end of the lever 52 being provided withha spiked eXtrem-ity .53 .designed to .en-gage withr the ground as the piston moves into its outer.

most position; any sui-table means, -such' for instance7 as a chain or length .ofcable 54, may be `connectedZbetween the lever 52 ,and

lli)

secured to a suitable part of the vehicle and a supporting leg y56 is provided, this leg havingv a forked upper extremity 57 by means of which itis pivotally mounted upon the pin 8, the leg at its lower extremity being spiked as shown in 58 so as to engage with the ground as the piston moves into its outermost position, in the manner shown, and whereby the thrust due to the weight of the car is mainly taken by the track 55.

As will be readily understood,in the case where the pump supplyingthe compressed operating fluid is itself provided with a nonreturn valve, the non-returnk valves disposed within the casings 43 and 46 may be dispensed with. p It will also be understood that the members 44 and 46a, in practice,

'1 are connected to a source of fluid pressure through suitable valve devices, not shown.

Claims: c

l. A jack f-or vehicles comprising a cylinder, means upon the vehicle pivotally supporting one end of said cylinder, a piston, a piston rod, a roller at the outer end of said piston rod, a plate adapted to contact with the ground, means connecting said plate to said piston rod, a track upon said plate 5 engaged by said roller, a rod pivotally connected at one end to the outer end of the piston rod, means pivotally connecting the other end of said rod to the vehicle, means connecting the ends of the cylinder with a source of pressure7 valves for controlling the admission and exhaust to the cylinder to operate the piston in one or other direction and means actuatedA by the piston and piston rod for operating said valves.

2. A jack for vehicles comprising a cylinder, means upon the vehicle pivotally supporting one endof said cylinder, a piston,a piston rod, a plate adapted to contact with the ground, a pin carried by said piston rod, a roller upon said pin a plate adapted to contact with the ground, a track on said plate engaged by said roller, guides upon said plate engaging the pin carrying said roller, a rod connected at one end to they plate, a guide for said rod upon the cylinder, a spring encircling said rod and op erating to push said plate in a downward direction, a rod pivotally connected at one end to the vehicle, and` at the other end to the outer end of the piston rod, means connecting the opposite ends of the cylinder, with a source of pressure, valves for controlling the admission and exhaust to the cylinder to operate the piston in one or vother direction andmeans actuated by the piston and piston rod for operating said valves.

A3. A jack for vehicles comprising a cylinder, means upon the vehicle pivotally supn porting one end `of said cylinder, a piston,

a piston rod, a plate adapted to contact with the ground, a pin` carried by said piston rod, alroller upon said pin, a plate adapted to contact with -the ground, a track on said plate engaged by said roller, guides upon said plate engaging the pin carrying said roller, a rod connected at one end to the plate, a guide for said rod upon the cylinder, a spring encircling said rod and operating to push said plate in a downward direction a rod pivotally connected at one end to the vehicle, and at the other end to the outer end of the piston rod, means connecting the opposite ends ofthe cylinder with a source of pressure, a valve comprising a rod passing through a stuffing box at the outer end of the cylinder, a longitudinally disposed passage in said rod communicatingat its outer end with the atmosphere, a transverse passage communicating with the inner end of said first passage and with the cylinder,

a second valvealso in the form of a rod, a

casingfor said valve, a connection in said casing for the supply of power thereto, a passage in the rod running longitudinally and from the inner end thereof, a transverse passage, means connecting said first and sec ond valves, said valves being moved in one or other direction to admit the power to one end of the cylinder and exhaust from the other by contact of the piston with the first rod, and by means carried by the piston rod, andmeans connected to the end of the cylinder remote from the valves for supplying power thereto.

4. A jack for vehicles, comprising a cylinder, means upon the vehicle pivotally supporting one end of said cylinder, a piston, a piston rod, a plate adapted to contact with the ground, a pin carried by said piston rod, a roller upon said pin, a plate adapted to contact with the ground, a track on said plate engaged by said roller, guides upon said plate engaging the pin carrying said roller, a rod connected at one end to the plate, a guide for said rod upon the cylinder, a spring encircling said rod and operating to push said yplate in a downward direction, a rod pivotally connected at one end to the vehicle and at the other end to the outer end of the piston rod, means connecting the opposite ends of the cylinder with a. source of pressure, a valve comprising a. rod passing through a stuffing box at the outer en-d of the cylinder, a longitudinally disposed passage 1n said rod communicating at its outer end with the atmosphere, a transverse passage communicating with the inner end of said first passage and with the cylinder, a second valve also in the form of a rod, a casing for said valve, a

connection omsaidfoasing orxthe supply-.orf power thereto, a passage in the rod running longitudinally and from :the innerend thereofgoa transverse passage7 means :connecting saidifirst and'second VaLves,sad :Valvesybeing "movedgin onefor other direoti'onfto admit :the power 4toione end ofthefcylinder andexhaust from the Y'other .byfcontaet of the-piston-Wvith y the first .rod and by meanscarried vby the1pisf 105Cton rod, ,and means Connected `to the end ofv the Cylinder remote from the -valves torsupplying power thereto, anda fnon-return Valve interposedy between said :connection-fand .-the admission to the cylinder, Y 15. 5. YA jaokvfor vehiolescomprising a cylinder, :means xupon said vehicle pivotally sup porting one-end ofthe cylinder, a piston, .a piston rod, a vplate member :having-a track thereon and adapted to engage .the vground, means conneetingsa-d ground engaging :plate member tosaid piston rod, a rod'conneoted t0 said v*piston vrod'and to the Vehicle, means for admitting-a Huid under pressure to the cylinder to move the piston in one or other di- 251 reetion, means for Controlling `the admission and exhaust of said fluid, andrmeans in rollingeontact With sai-dtraek on said plate membereandoperablefbysaid piston rod :for operatingvsaid rod vconnected yto said Vehicle for raising :the same. Y t

6; A yjack for Vehicles, Comprising acylinder ;.a piston :rod therein; a ground bearing` member; 1a rollingmember; means forholdingv said rolling member in constant Contact with the ground bearing member; la connection between the rolling member and said vehicle; means for supporting fthe parts in anfelevated position, and means ,actuated by 'the operation-of said 'piston Lrod for loweringk 40, the ground bearing member to the Yground and `for :urging said roller member .forward over -saidground bearing :member for raising said Vehicle. y

In-.Ytestimony whereofy I .have hereunto set myihand.

` ALBERT 'ERNEST HEDGES. 

